1214 lines
27 KiB
C
1214 lines
27 KiB
C
/* $NetBSD: inbound.c,v 1.7 2003/08/07 11:16:31 agc Exp $ */
|
||
|
||
/*-
|
||
* Copyright (c) 1988 The Regents of the University of California.
|
||
* All rights reserved.
|
||
*
|
||
* Redistribution and use in source and binary forms, with or without
|
||
* modification, are permitted provided that the following conditions
|
||
* are met:
|
||
* 1. Redistributions of source code must retain the above copyright
|
||
* notice, this list of conditions and the following disclaimer.
|
||
* 2. Redistributions in binary form must reproduce the above copyright
|
||
* notice, this list of conditions and the following disclaimer in the
|
||
* documentation and/or other materials provided with the distribution.
|
||
* 3. Neither the name of the University nor the names of its contributors
|
||
* may be used to endorse or promote products derived from this software
|
||
* without specific prior written permission.
|
||
*
|
||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
* SUCH DAMAGE.
|
||
*/
|
||
|
||
#include <sys/cdefs.h>
|
||
#ifndef lint
|
||
#if 0
|
||
static char sccsid[] = "@(#)inbound.c 4.3 (Berkeley) 4/26/91";
|
||
#else
|
||
__RCSID("$NetBSD: inbound.c,v 1.7 2003/08/07 11:16:31 agc Exp $");
|
||
#endif
|
||
#endif /* not lint */
|
||
|
||
#include <stdio.h>
|
||
|
||
#include "../general/general.h"
|
||
#include "function.h"
|
||
#include "hostctlr.h"
|
||
#include "oia.h"
|
||
#include "scrnctlr.h"
|
||
#include "screen.h"
|
||
#include "options.h"
|
||
#include "../api/dctype.h"
|
||
#include "../api/ebc_disp.h"
|
||
|
||
#include "../general/globals.h"
|
||
#include "../sys_curses/telextrn.h"
|
||
#include "externs.h"
|
||
#include "declare.h"
|
||
|
||
#define EmptyChar() (ourPTail == ourPHead)
|
||
#define FullChar() (ourPHead == ourBuffer+sizeof ourBuffer)
|
||
|
||
|
||
/*
|
||
* We define something to allow us to to IsProtected() quickly
|
||
* on unformatted screens (with the current algorithm for fields,
|
||
* unprotected takes exponential time...).
|
||
*
|
||
* The idea is to call SetXIsProtected() BEFORE the
|
||
* loop, then use XIsProtected().
|
||
*/
|
||
|
||
#define SetXIsProtected() (XWasSF = 1)
|
||
#define XIsProtected(p) (IsStartField(p) ? \
|
||
(XWasSF = 1) : \
|
||
(XWasSF ? \
|
||
(XWasSF = 0, XProtected = IsProtected(p)) : \
|
||
XProtected))
|
||
|
||
static char ourBuffer[400];
|
||
|
||
static char *ourPHead = ourBuffer,
|
||
*ourPTail = ourBuffer;
|
||
|
||
static int HadAid; /* Had an AID haven't sent */
|
||
|
||
static int InsertMode; /* is the terminal in insert mode? */
|
||
|
||
static unsigned int
|
||
rememberedshiftstate; /* Shift (alt) state of terminal */
|
||
|
||
# define HITNUM(s) ((((s)&(SHIFT_CAPS|SHIFT_UPSHIFT))? 1:0) \
|
||
+ ((((s)&SHIFT_ALT)? 1:0)<<1))
|
||
|
||
static int XWasSF, XProtected; /* For optimizations */
|
||
#if !defined(PURE3274)
|
||
extern int TransparentClock, OutputClock;
|
||
#endif /* !defined(PURE3274) */
|
||
|
||
#include "kbd.out" /* Get keyboard mapping function */
|
||
|
||
/* the following are global variables */
|
||
|
||
extern int UnLocked; /* keyboard is UnLocked? */
|
||
|
||
|
||
static void Tab(void);
|
||
static void BackTab(void);
|
||
static void EraseEndOfField(void);
|
||
static void Delete(int, int );
|
||
static void ColBak(void);
|
||
static void ColTab(void);
|
||
static void Home(void);
|
||
static int LastOfField(int);
|
||
static void FlushChar(void);
|
||
static void AddChar(int);
|
||
static void SendUnformatted(void);
|
||
static int SendField(int, int);
|
||
static void OneCharacter(int, int);
|
||
|
||
/*
|
||
* init_inbound :
|
||
*
|
||
* Reset variables to initial state.
|
||
*/
|
||
|
||
void
|
||
init_inbound()
|
||
{
|
||
ourPHead = ourPTail = ourBuffer;
|
||
HadAid = 0;
|
||
rememberedshiftstate = 0;
|
||
InsertMode = 0;
|
||
}
|
||
|
||
|
||
/* Tab() - sets cursor to the start of the next unprotected field */
|
||
static void
|
||
Tab()
|
||
{
|
||
int i, j;
|
||
|
||
i = CursorAddress;
|
||
j = WhereAttrByte(CursorAddress);
|
||
do {
|
||
if (IsStartField(i) && IsUnProtected(ScreenInc(i))) {
|
||
break;
|
||
}
|
||
i = FieldInc(i);
|
||
} while (i != j);
|
||
if (IsStartField(i) && IsUnProtected(ScreenInc(i))) {
|
||
CursorAddress = ScreenInc(i);
|
||
} else {
|
||
CursorAddress = SetBufferAddress(0,0);
|
||
}
|
||
}
|
||
|
||
|
||
/* BackTab() - sets cursor to the start of the most recent field */
|
||
|
||
static void
|
||
BackTab()
|
||
{
|
||
int i;
|
||
|
||
i = ScreenDec(CursorAddress);
|
||
for (;;) {
|
||
if (IsStartField(ScreenDec(i)) && IsUnProtected(i)) {
|
||
CursorAddress = i;
|
||
break;
|
||
}
|
||
if (i == CursorAddress) {
|
||
CursorAddress = SetBufferAddress(0,0);
|
||
break;
|
||
}
|
||
i = ScreenDec(i);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* ModifyMdt() - Turn a modified data tag bit on or off (watch
|
||
* out for unformatted screens).
|
||
*/
|
||
|
||
void
|
||
ModifyMdt(x,on)
|
||
int x;
|
||
int on;
|
||
{
|
||
int i = x;
|
||
|
||
if (IsStartField(i)) { /* If we are at a start field position... */
|
||
if (on) {
|
||
ModifyHost(i, |= ATTR_MDT); /* Turn it on */
|
||
} else {
|
||
ModifyHost(i, &= ~ATTR_MDT); /* Turn it off */
|
||
}
|
||
} else {
|
||
i = WhereAttrByte(i); /* Find beginning of field */
|
||
if (IsStartField(i)) { /* Is there one? */
|
||
if (on) {
|
||
ModifyHost(i, |= ATTR_MDT); /* Turn it on */
|
||
} else {
|
||
ModifyHost(i, &= ~ATTR_MDT); /* Turn it off */
|
||
}
|
||
} /* else, don't modify - this is an unformatted screen */
|
||
}
|
||
}
|
||
|
||
|
||
/* EraseEndOfField - erase all characters to the end of a field */
|
||
|
||
static void
|
||
EraseEndOfField()
|
||
{
|
||
int i;
|
||
|
||
if (IsProtected(CursorAddress)) {
|
||
RingBell("Protected Field");
|
||
} else {
|
||
TurnOnMdt(CursorAddress);
|
||
if (FormattedScreen()) {
|
||
i = CursorAddress;
|
||
do {
|
||
AddHost(i, 0);
|
||
i = ScreenInc(i);
|
||
} while ((i != CursorAddress) && !IsStartField(i));
|
||
} else { /* Screen is Unformatted */
|
||
i = CursorAddress;
|
||
do {
|
||
AddHost(i, 0);
|
||
i = ScreenInc(i);
|
||
} while (i != HighestScreen());
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Delete() - deletes a character from the screen
|
||
*
|
||
* What we want to do is delete the section
|
||
* [where, from-1] from the screen,
|
||
* filling in with what comes at from.
|
||
*
|
||
* The deleting continues to the end of the field (or
|
||
* until the cursor wraps).
|
||
*
|
||
* From can be a start of a field. We
|
||
* check for that. However, there can't be any
|
||
* fields that start between where and from.
|
||
* We don't check for that.
|
||
*
|
||
* Also, we assume that the protection status of
|
||
* everything has been checked by the caller.
|
||
*
|
||
*/
|
||
|
||
static void
|
||
Delete(where, from)
|
||
int where, /* Where to start deleting from */
|
||
from; /* Where to pull back from */
|
||
{
|
||
int i;
|
||
|
||
TurnOnMdt(where); /* Only do this once in this field */
|
||
i = where;
|
||
do {
|
||
if (IsStartField(from)) {
|
||
AddHost(i, 0); /* Stick the edge at the start field */
|
||
} else {
|
||
AddHost(i, (char)GetHost(from));
|
||
from = ScreenInc(from); /* Move the edge */
|
||
}
|
||
i = ScreenInc(i);
|
||
} while ((!IsStartField(i)) && (i != where));
|
||
}
|
||
|
||
static void
|
||
ColBak()
|
||
{
|
||
int i;
|
||
|
||
i = ScreenLineOffset(CursorAddress);
|
||
for (i = i-1; i >= 0; i--) {
|
||
if (OptColTabs[i]) {
|
||
break;
|
||
}
|
||
}
|
||
if (i < 0) {
|
||
i = 0;
|
||
}
|
||
CursorAddress = SetBufferAddress(ScreenLine(CursorAddress), i);
|
||
}
|
||
|
||
static void
|
||
ColTab()
|
||
{
|
||
int i;
|
||
|
||
i = ScreenLineOffset(CursorAddress);
|
||
for (i = i+1; i < NumberColumns; i++) {
|
||
if (OptColTabs[i]) {
|
||
break;
|
||
}
|
||
}
|
||
if (i >= NumberColumns) {
|
||
i = NumberColumns-1;
|
||
}
|
||
CursorAddress = SetBufferAddress(ScreenLine(CursorAddress), i);
|
||
}
|
||
|
||
static void
|
||
Home()
|
||
{
|
||
int i;
|
||
int j;
|
||
|
||
i = SetBufferAddress(OptHome, 0);
|
||
j = WhereLowByte(i);
|
||
/*
|
||
* If the initial value of i points to the field attribute of
|
||
* an unprotected field, we need to return the address of the
|
||
* first data byte in the field (assuming there are any!).
|
||
*/
|
||
if (IsStartField(i) && IsUnProtected(j)) {
|
||
CursorAddress = j;
|
||
return;
|
||
}
|
||
do {
|
||
if (IsUnProtected(i)) {
|
||
CursorAddress = i;
|
||
return;
|
||
}
|
||
/* the following could be a problem if we got here with an
|
||
* unformatted screen. However, this is "impossible", since
|
||
* with an unformatted screen, the IsUnProtected(i) above
|
||
* should be true.
|
||
*/
|
||
i = ScreenInc(FieldInc(i));
|
||
} while (i != j);
|
||
CursorAddress = LowestScreen();
|
||
}
|
||
|
||
static int
|
||
LastOfField(i)
|
||
int i; /* position to start from */
|
||
{
|
||
int j;
|
||
int k;
|
||
|
||
k = j = i;
|
||
SetXIsProtected();
|
||
while (XIsProtected(i) || Disspace(GetHost(i))) {
|
||
i = ScreenInc(i);
|
||
if (i == j) {
|
||
break;
|
||
}
|
||
}
|
||
/* We are now IN a word IN an unprotected field (or wrapped) */
|
||
while (!XIsProtected(i)) {
|
||
if (!Disspace(GetHost(i))) {
|
||
k = i;
|
||
}
|
||
i = ScreenInc(i);
|
||
if (i == j) {
|
||
break;
|
||
}
|
||
}
|
||
return(k);
|
||
}
|
||
|
||
|
||
static void
|
||
FlushChar()
|
||
{
|
||
ourPTail = ourPHead = ourBuffer;
|
||
}
|
||
|
||
|
||
/*
|
||
* Add one EBCDIC (NOT display code) character to the buffer.
|
||
*/
|
||
|
||
static void
|
||
AddChar(character)
|
||
char character;
|
||
{
|
||
if (FullChar()) {
|
||
ourPTail += DataToNetwork(ourPTail, ourPHead-ourPTail, 0);
|
||
if (EmptyChar()) {
|
||
FlushChar();
|
||
} else {
|
||
char buffer[100];
|
||
|
||
sprintf(buffer, "File %s, line %d: No room in network buffer!\n",
|
||
__FILE__, __LINE__);
|
||
ExitString(buffer, 1);
|
||
/*NOTREACHED*/
|
||
}
|
||
}
|
||
*ourPHead++ = character;
|
||
}
|
||
|
||
|
||
static void
|
||
SendUnformatted()
|
||
{
|
||
int i, j;
|
||
int Nulls;
|
||
int c;
|
||
|
||
/* look for start of field */
|
||
Nulls = 0;
|
||
i = j = LowestScreen();
|
||
do {
|
||
c = GetHost(i);
|
||
if (c == 0) {
|
||
Nulls++;
|
||
} else {
|
||
while (Nulls) {
|
||
Nulls--;
|
||
AddChar(EBCDIC_BLANK); /* put in blanks */
|
||
}
|
||
AddChar((char)disp_ebc[c]);
|
||
}
|
||
i = ScreenInc(i);
|
||
} while (i != j);
|
||
}
|
||
|
||
static int
|
||
SendField(i, cmd)
|
||
int i; /* where we saw MDT bit */
|
||
int cmd; /* The command code (type of read) */
|
||
{
|
||
int j;
|
||
int k;
|
||
int Nulls;
|
||
int c;
|
||
|
||
/* look for start of field */
|
||
i = j = WhereLowByte(i);
|
||
|
||
/* On a test_request_read, don't send sba and address */
|
||
if ((AidByte != AID_TREQ)
|
||
|| (cmd == CMD_SNA_READ_MODIFIED_ALL)) {
|
||
AddChar(ORDER_SBA); /* set start field */
|
||
AddChar(BufferTo3270_0(j)); /* set address of this field */
|
||
AddChar(BufferTo3270_1(j));
|
||
}
|
||
/*
|
||
* Only on read_modified_all do we return the contents
|
||
* of the field when the attention was caused by a
|
||
* selector pen.
|
||
*/
|
||
if ((AidByte != AID_SELPEN)
|
||
|| (cmd == CMD_SNA_READ_MODIFIED_ALL)) {
|
||
if (!IsStartField(j)) {
|
||
Nulls = 0;
|
||
k = ScreenInc(WhereHighByte(j));
|
||
do {
|
||
c = GetHost(j);
|
||
if (c == 0) {
|
||
Nulls++;
|
||
} else {
|
||
while (Nulls) {
|
||
Nulls--;
|
||
AddChar(EBCDIC_BLANK); /* put in blanks */
|
||
}
|
||
AddChar((char)disp_ebc[c]);
|
||
}
|
||
j = ScreenInc(j);
|
||
} while ((j != k) && (j != i));
|
||
}
|
||
} else {
|
||
j = FieldInc(j);
|
||
}
|
||
return(j);
|
||
}
|
||
|
||
/* Various types of reads... */
|
||
void
|
||
DoReadModified(cmd)
|
||
int cmd; /* The command sent */
|
||
{
|
||
int i, j;
|
||
|
||
if (AidByte) {
|
||
if (AidByte != AID_TREQ) {
|
||
AddChar(AidByte);
|
||
} else {
|
||
/* Test Request Read header */
|
||
AddChar(EBCDIC_SOH);
|
||
AddChar(EBCDIC_PERCENT);
|
||
AddChar(EBCDIC_SLASH);
|
||
AddChar(EBCDIC_STX);
|
||
}
|
||
} else {
|
||
AddChar(AID_NONE);
|
||
}
|
||
if (((AidByte != AID_PA1) && (AidByte != AID_PA2)
|
||
&& (AidByte != AID_PA3) && (AidByte != AID_CLEAR))
|
||
|| (cmd == CMD_SNA_READ_MODIFIED_ALL)) {
|
||
if ((AidByte != AID_TREQ)
|
||
|| (cmd == CMD_SNA_READ_MODIFIED_ALL)) {
|
||
/* Test request read_modified doesn't give cursor address */
|
||
AddChar(BufferTo3270_0(CursorAddress));
|
||
AddChar(BufferTo3270_1(CursorAddress));
|
||
}
|
||
i = j = WhereAttrByte(LowestScreen());
|
||
/* Is this an unformatted screen? */
|
||
if (!IsStartField(i)) { /* yes, handle separate */
|
||
SendUnformatted();
|
||
} else {
|
||
do {
|
||
if (HasMdt(i)) {
|
||
i = SendField(i, cmd);
|
||
} else {
|
||
i = FieldInc(i);
|
||
}
|
||
} while (i != j);
|
||
}
|
||
}
|
||
ourPTail += DataToNetwork(ourPTail, ourPHead-ourPTail, 1);
|
||
if (EmptyChar()) {
|
||
FlushChar();
|
||
HadAid = 0; /* killed that buffer */
|
||
}
|
||
}
|
||
|
||
/* A read buffer operation... */
|
||
|
||
void
|
||
DoReadBuffer()
|
||
{
|
||
int i, j;
|
||
|
||
if (AidByte) {
|
||
AddChar(AidByte);
|
||
} else {
|
||
AddChar(AID_NONE);
|
||
}
|
||
AddChar(BufferTo3270_0(CursorAddress));
|
||
AddChar(BufferTo3270_1(CursorAddress));
|
||
i = j = LowestScreen();
|
||
do {
|
||
if (IsStartField(i)) {
|
||
AddChar(ORDER_SF);
|
||
AddChar(BufferTo3270_1(FieldAttributes(i)));
|
||
} else {
|
||
AddChar((char)disp_ebc[GetHost(i)]);
|
||
}
|
||
i = ScreenInc(i);
|
||
} while (i != j);
|
||
ourPTail += DataToNetwork(ourPTail, ourPHead-ourPTail, 1);
|
||
if (EmptyChar()) {
|
||
FlushChar();
|
||
HadAid = 0; /* killed that buffer */
|
||
}
|
||
}
|
||
|
||
/* Send some transparent data to the host */
|
||
|
||
void
|
||
SendTransparent(buffer, count)
|
||
char *buffer;
|
||
int count;
|
||
{
|
||
char stuff[3];
|
||
|
||
stuff[0] = AID_NONE_PRINTER;
|
||
stuff[1] = BufferTo3270_0(count);
|
||
stuff[2] = BufferTo3270_1(count);
|
||
DataToNetwork(stuff, sizeof stuff, 0);
|
||
DataToNetwork(buffer, count, 1);
|
||
}
|
||
|
||
|
||
/* Try to send some data to host */
|
||
|
||
void
|
||
SendToIBM()
|
||
{
|
||
#if !defined(PURE3274)
|
||
if (TransparentClock >= OutputClock) {
|
||
if (HadAid) {
|
||
AddChar(AidByte);
|
||
HadAid = 0;
|
||
} else {
|
||
AddChar(AID_NONE_PRINTER);
|
||
}
|
||
do {
|
||
ourPTail += DataToNetwork(ourPTail, ourPHead-ourPTail, 1);
|
||
} while (!EmptyChar());
|
||
FlushChar();
|
||
} else if (HadAid) {
|
||
DoReadModified(CMD_READ_MODIFIED);
|
||
}
|
||
#else /* !defined(PURE3274) */
|
||
if (HadAid) {
|
||
DoReadModified(CMD_READ_MODIFIED);
|
||
}
|
||
#endif /* !defined(PURE3274) */
|
||
}
|
||
|
||
/* This takes in one character from the keyboard and places it on the
|
||
* screen.
|
||
*/
|
||
|
||
static void
|
||
OneCharacter(c, insert)
|
||
int c; /* character (Ebcdic) to be shoved in */
|
||
int insert; /* are we in insert mode? */
|
||
{
|
||
int i, j;
|
||
|
||
if (IsProtected(CursorAddress)) {
|
||
RingBell("Protected Field");
|
||
return;
|
||
}
|
||
if (insert) {
|
||
/* is the last character in the field a blank or null? */
|
||
i = ScreenDec(FieldInc(CursorAddress));
|
||
j = GetHost(i);
|
||
if (!Disspace(j)) {
|
||
RingBell("No more room for insert");
|
||
return;
|
||
} else {
|
||
for (j = ScreenDec(i); i != CursorAddress;
|
||
j = ScreenDec(j), i = ScreenDec(i)) {
|
||
AddHost(i, (char)GetHost(j));
|
||
}
|
||
}
|
||
}
|
||
AddHost(CursorAddress, c);
|
||
TurnOnMdt(CursorAddress);
|
||
CursorAddress = ScreenInc(CursorAddress);
|
||
if (IsStartField(CursorAddress) &&
|
||
((FieldAttributes(CursorAddress)&ATTR_AUTO_SKIP_MASK) ==
|
||
ATTR_AUTO_SKIP_VALUE)) {
|
||
Tab();
|
||
}
|
||
}
|
||
|
||
/*
|
||
* AcceptKeystroke()
|
||
*
|
||
* Processes one keystroke.
|
||
*
|
||
* Returns:
|
||
*
|
||
* 0 if this keystroke was NOT processed.
|
||
* 1 if everything went OK.
|
||
*/
|
||
|
||
int
|
||
AcceptKeystroke(scancode, shiftstate)
|
||
unsigned int
|
||
scancode, /* 3270 scancode */
|
||
shiftstate; /* The shift state */
|
||
{
|
||
int c;
|
||
int i;
|
||
int j;
|
||
enum ctlrfcn ctlrfcn;
|
||
|
||
if (scancode >= numberof(hits)) {
|
||
ExitString(
|
||
"Unknown scancode encountered in AcceptKeystroke.\n", 1);
|
||
/*NOTREACHED*/
|
||
}
|
||
ctlrfcn = hits[scancode].hit[HITNUM(shiftstate)].ctlrfcn;
|
||
c = hits[scancode].hit[HITNUM(shiftstate)].code;
|
||
|
||
if (!UnLocked || HadAid) {
|
||
if (HadAid) {
|
||
SendToIBM();
|
||
if (!EmptyChar()) {
|
||
return 0; /* nothing to do */
|
||
}
|
||
}
|
||
#if !defined(PURE3274)
|
||
if (!HadAid && EmptyChar()) {
|
||
if ((ctlrfcn == FCN_RESET) || (ctlrfcn == FCN_MASTER_RESET)) {
|
||
UnLocked = 1;
|
||
}
|
||
}
|
||
#endif /* !defined(PURE3274) */
|
||
if (!UnLocked) {
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* now, either empty, or haven't seen aid yet */
|
||
|
||
#if !defined(PURE3274)
|
||
/*
|
||
* If we are in transparent (output) mode, do something special
|
||
* with keystrokes.
|
||
*/
|
||
if (TransparentClock == OutputClock) {
|
||
if (ctlrfcn == FCN_AID) {
|
||
UnLocked = 0;
|
||
InsertMode = 0;
|
||
AidByte = (c);
|
||
HadAid = 1;
|
||
} else {
|
||
switch (ctlrfcn) {
|
||
case FCN_ESCAPE:
|
||
StopScreen(1);
|
||
command(0, NULL, 0);
|
||
if (shell_active == 0) {
|
||
ConnectScreen();
|
||
}
|
||
break;
|
||
|
||
case FCN_RESET:
|
||
case FCN_MASTER_RESET:
|
||
UnLocked = 1;
|
||
break;
|
||
|
||
default:
|
||
return 0;
|
||
}
|
||
}
|
||
}
|
||
#endif /* !defined(PURE3274) */
|
||
|
||
if (ctlrfcn == FCN_CHARACTER) {
|
||
/* Add the character to the buffer */
|
||
OneCharacter(c, InsertMode);
|
||
} else if (ctlrfcn == FCN_AID) { /* got Aid */
|
||
if (c == AID_CLEAR) {
|
||
LocalClearScreen(); /* Side effect is to clear 3270 */
|
||
}
|
||
ResetOiaOnlineA(&OperatorInformationArea);
|
||
SetOiaTWait(&OperatorInformationArea);
|
||
ResetOiaInsert(&OperatorInformationArea);
|
||
InsertMode = 0; /* just like a 3278 */
|
||
SetOiaSystemLocked(&OperatorInformationArea);
|
||
SetOiaModified();
|
||
UnLocked = 0;
|
||
AidByte = c;
|
||
HadAid = 1;
|
||
SendToIBM();
|
||
} else {
|
||
switch (ctlrfcn) {
|
||
|
||
case FCN_CURSEL:
|
||
c = FieldAttributes(CursorAddress)&ATTR_DSPD_MASK;
|
||
if (!FormattedScreen()
|
||
|| ((c != ATTR_DSPD_DSPD) && (c != ATTR_DSPD_HIGH))) {
|
||
RingBell("Cursor not in selectable field");
|
||
} else {
|
||
i = ScreenInc(WhereAttrByte(CursorAddress));
|
||
c = GetHost(i);
|
||
if (c == DISP_QUESTION) {
|
||
AddHost(i, DISP_GREATER_THAN);
|
||
TurnOnMdt(i);
|
||
} else if (c == DISP_GREATER_THAN) {
|
||
AddHost(i, DISP_QUESTION);
|
||
TurnOffMdt(i);
|
||
} else if (c == DISP_BLANK || c == DISP_NULL
|
||
|| c == DISP_AMPERSAND) {
|
||
UnLocked = 0;
|
||
InsertMode = 0;
|
||
ResetOiaOnlineA(&OperatorInformationArea);
|
||
SetOiaTWait(&OperatorInformationArea);
|
||
SetOiaSystemLocked(&OperatorInformationArea);
|
||
ResetOiaInsert(&OperatorInformationArea);
|
||
SetOiaModified();
|
||
if (c == DISP_AMPERSAND) {
|
||
TurnOnMdt(i); /* Only for & type */
|
||
AidByte = AID_ENTER;
|
||
} else {
|
||
AidByte = AID_SELPEN;
|
||
}
|
||
HadAid = 1;
|
||
SendToIBM();
|
||
} else {
|
||
RingBell(
|
||
"Cursor not in a selectable field (designator)");
|
||
}
|
||
}
|
||
break;
|
||
|
||
#if !defined(PURE3274)
|
||
case FCN_ERASE:
|
||
if (IsProtected(ScreenDec(CursorAddress))) {
|
||
RingBell("Protected Field");
|
||
} else {
|
||
CursorAddress = ScreenDec(CursorAddress);
|
||
Delete(CursorAddress, ScreenInc(CursorAddress));
|
||
}
|
||
break;
|
||
case FCN_WERASE:
|
||
j = CursorAddress;
|
||
i = ScreenDec(j);
|
||
if (IsProtected(i)) {
|
||
RingBell("Protected Field");
|
||
} else {
|
||
SetXIsProtected();
|
||
while ((!XIsProtected(i) && Disspace(GetHost(i)))
|
||
&& (i != j)) {
|
||
i = ScreenDec(i);
|
||
}
|
||
/* we are pointing at a character in a word, or
|
||
* at a protected position
|
||
*/
|
||
while ((!XIsProtected(i) && !Disspace(GetHost(i)))
|
||
&& (i != j)) {
|
||
i = ScreenDec(i);
|
||
}
|
||
/* we are pointing at a space, or at a protected
|
||
* position
|
||
*/
|
||
CursorAddress = ScreenInc(i);
|
||
Delete(CursorAddress, j);
|
||
}
|
||
break;
|
||
|
||
case FCN_FERASE:
|
||
if (IsProtected(CursorAddress)) {
|
||
RingBell("Protected Field");
|
||
} else {
|
||
CursorAddress = ScreenInc(CursorAddress); /* for btab */
|
||
BackTab();
|
||
EraseEndOfField();
|
||
}
|
||
break;
|
||
|
||
case FCN_RESET:
|
||
if (InsertMode) {
|
||
InsertMode = 0;
|
||
ResetOiaInsert(&OperatorInformationArea);
|
||
SetOiaModified();
|
||
}
|
||
break;
|
||
case FCN_MASTER_RESET:
|
||
if (InsertMode) {
|
||
InsertMode = 0;
|
||
ResetOiaInsert(&OperatorInformationArea);
|
||
SetOiaModified();
|
||
}
|
||
RefreshScreen();
|
||
break;
|
||
#endif /* !defined(PURE3274) */
|
||
|
||
case FCN_UP:
|
||
CursorAddress = ScreenUp(CursorAddress);
|
||
break;
|
||
|
||
case FCN_LEFT:
|
||
CursorAddress = ScreenDec(CursorAddress);
|
||
break;
|
||
|
||
case FCN_RIGHT:
|
||
CursorAddress = ScreenInc(CursorAddress);
|
||
break;
|
||
|
||
case FCN_DOWN:
|
||
CursorAddress = ScreenDown(CursorAddress);
|
||
break;
|
||
|
||
case FCN_DELETE:
|
||
if (IsProtected(CursorAddress)) {
|
||
RingBell("Protected Field");
|
||
} else {
|
||
Delete(CursorAddress, ScreenInc(CursorAddress));
|
||
}
|
||
break;
|
||
|
||
case FCN_INSRT:
|
||
InsertMode = !InsertMode;
|
||
if (InsertMode) {
|
||
SetOiaInsert(&OperatorInformationArea);
|
||
} else {
|
||
ResetOiaInsert(&OperatorInformationArea);
|
||
}
|
||
SetOiaModified();
|
||
break;
|
||
|
||
case FCN_HOME:
|
||
Home();
|
||
break;
|
||
|
||
case FCN_NL:
|
||
/* The algorithm is to look for the first unprotected
|
||
* column after column 0 of the following line. Having
|
||
* found that unprotected column, we check whether the
|
||
* cursor-address-at-entry is at or to the right of the
|
||
* LeftMargin AND the LeftMargin column of the found line
|
||
* is unprotected. If this conjunction is true, then
|
||
* we set the found pointer to the address of the LeftMargin
|
||
* column in the found line.
|
||
* Then, we set the cursor address to the found address.
|
||
*/
|
||
i = SetBufferAddress(ScreenLine(ScreenDown(CursorAddress)), 0);
|
||
j = ScreenInc(WhereAttrByte(CursorAddress));
|
||
do {
|
||
if (IsUnProtected(i)) {
|
||
break;
|
||
}
|
||
/* Again (see comment in Home()), this COULD be a problem
|
||
* with an unformatted screen.
|
||
*/
|
||
/* If there was a field with only an attribute byte,
|
||
* we may be pointing to the attribute byte of the NEXT
|
||
* field, so just look at the next byte.
|
||
*/
|
||
if (IsStartField(i)) {
|
||
i = ScreenInc(i);
|
||
} else {
|
||
i = ScreenInc(FieldInc(i));
|
||
}
|
||
} while (i != j);
|
||
if (!IsUnProtected(i)) { /* couldn't find unprotected */
|
||
i = SetBufferAddress(0,0);
|
||
}
|
||
if (OptLeftMargin <= ScreenLineOffset(CursorAddress)) {
|
||
if (IsUnProtected(SetBufferAddress(ScreenLine(i),
|
||
OptLeftMargin))) {
|
||
i = SetBufferAddress(ScreenLine(i), OptLeftMargin);
|
||
}
|
||
}
|
||
CursorAddress = i;
|
||
break;
|
||
|
||
case FCN_EINP:
|
||
if (!FormattedScreen()) {
|
||
i = CursorAddress;
|
||
TurnOffMdt(i);
|
||
do {
|
||
AddHost(i, 0);
|
||
i = ScreenInc(i);
|
||
} while (i != CursorAddress);
|
||
} else {
|
||
/*
|
||
* The algorithm is: go through each unprotected
|
||
* field on the screen, clearing it out. When
|
||
* we are at the start of a field, skip that field
|
||
* if its contents are protected.
|
||
*/
|
||
i = j = FieldInc(CursorAddress);
|
||
do {
|
||
if (IsUnProtected(ScreenInc(i))) {
|
||
i = ScreenInc(i);
|
||
TurnOffMdt(i);
|
||
do {
|
||
AddHost(i, 0);
|
||
i = ScreenInc(i);
|
||
} while (!IsStartField(i));
|
||
} else {
|
||
i = FieldInc(i);
|
||
}
|
||
} while (i != j);
|
||
}
|
||
Home();
|
||
break;
|
||
|
||
case FCN_EEOF:
|
||
EraseEndOfField();
|
||
break;
|
||
|
||
case FCN_SPACE:
|
||
OneCharacter(DISP_BLANK, InsertMode); /* Add cent */
|
||
break;
|
||
|
||
case FCN_CENTSIGN:
|
||
OneCharacter(DISP_CENTSIGN, InsertMode); /* Add cent */
|
||
break;
|
||
|
||
case FCN_FM:
|
||
OneCharacter(DISP_FM, InsertMode); /* Add field mark */
|
||
break;
|
||
|
||
case FCN_DP:
|
||
if (IsProtected(CursorAddress)) {
|
||
RingBell("Protected Field");
|
||
} else {
|
||
OneCharacter(DISP_DUP, InsertMode);/* Add dup character */
|
||
Tab();
|
||
}
|
||
break;
|
||
|
||
case FCN_TAB:
|
||
Tab();
|
||
break;
|
||
|
||
case FCN_BTAB:
|
||
BackTab();
|
||
break;
|
||
|
||
#ifdef NOTUSED /* Actually, this is superseded by unix flow
|
||
* control.
|
||
*/
|
||
case FCN_XOFF:
|
||
Flow = 0; /* stop output */
|
||
break;
|
||
|
||
case FCN_XON:
|
||
if (!Flow) {
|
||
Flow = 1; /* turn it back on */
|
||
DoTerminalOutput();
|
||
}
|
||
break;
|
||
#endif /* NOTUSED */
|
||
|
||
#if !defined(PURE3274)
|
||
case FCN_ESCAPE:
|
||
/* FlushChar(); do we want to flush characters from before? */
|
||
StopScreen(1);
|
||
command(0, NULL, 0);
|
||
if (shell_active == 0) {
|
||
ConnectScreen();
|
||
}
|
||
break;
|
||
|
||
case FCN_DISC:
|
||
StopScreen(1);
|
||
suspend(0, NULL);
|
||
setconnmode(0);
|
||
ConnectScreen();
|
||
break;
|
||
|
||
case FCN_RESHOW:
|
||
RefreshScreen();
|
||
break;
|
||
|
||
case FCN_SETTAB:
|
||
OptColTabs[ScreenLineOffset(CursorAddress)] = 1;
|
||
break;
|
||
|
||
case FCN_DELTAB:
|
||
OptColTabs[ScreenLineOffset(CursorAddress)] = 0;
|
||
break;
|
||
|
||
/*
|
||
* Clear all tabs, home line, and left margin.
|
||
*/
|
||
case FCN_CLRTAB:
|
||
for (i = 0; i < sizeof OptColTabs; i++) {
|
||
OptColTabs[i] = 0;
|
||
}
|
||
OptHome = 0;
|
||
OptLeftMargin = 0;
|
||
break;
|
||
|
||
case FCN_COLTAB:
|
||
ColTab();
|
||
break;
|
||
|
||
case FCN_COLBAK:
|
||
ColBak();
|
||
break;
|
||
|
||
case FCN_INDENT:
|
||
ColTab();
|
||
OptLeftMargin = ScreenLineOffset(CursorAddress);
|
||
break;
|
||
|
||
case FCN_UNDENT:
|
||
ColBak();
|
||
OptLeftMargin = ScreenLineOffset(CursorAddress);
|
||
break;
|
||
|
||
case FCN_SETMRG:
|
||
OptLeftMargin = ScreenLineOffset(CursorAddress);
|
||
break;
|
||
|
||
case FCN_SETHOM:
|
||
OptHome = ScreenLine(CursorAddress);
|
||
break;
|
||
|
||
/*
|
||
* Point to first character of next unprotected word on
|
||
* screen.
|
||
*/
|
||
case FCN_WORDTAB:
|
||
i = CursorAddress;
|
||
SetXIsProtected();
|
||
while (!XIsProtected(i) && !Disspace(GetHost(i))) {
|
||
i = ScreenInc(i);
|
||
if (i == CursorAddress) {
|
||
break;
|
||
}
|
||
}
|
||
/* i is either protected, a space (blank or null),
|
||
* or wrapped
|
||
*/
|
||
while (XIsProtected(i) || Disspace(GetHost(i))) {
|
||
i = ScreenInc(i);
|
||
if (i == CursorAddress) {
|
||
break;
|
||
}
|
||
}
|
||
CursorAddress = i;
|
||
break;
|
||
|
||
case FCN_WORDBACKTAB:
|
||
i = ScreenDec(CursorAddress);
|
||
SetXIsProtected();
|
||
while (XIsProtected(i) || Disspace(GetHost(i))) {
|
||
i = ScreenDec(i);
|
||
if (i == CursorAddress) {
|
||
break;
|
||
}
|
||
}
|
||
/* i is pointing to a character IN an unprotected word
|
||
* (or i wrapped)
|
||
*/
|
||
while (!Disspace(GetHost(i))) {
|
||
i = ScreenDec(i);
|
||
if (i == CursorAddress) {
|
||
break;
|
||
}
|
||
}
|
||
CursorAddress = ScreenInc(i);
|
||
break;
|
||
|
||
/* Point to last non-blank character of this/next
|
||
* unprotected word.
|
||
*/
|
||
case FCN_WORDEND:
|
||
i = ScreenInc(CursorAddress);
|
||
SetXIsProtected();
|
||
while (XIsProtected(i) || Disspace(GetHost(i))) {
|
||
i = ScreenInc(i);
|
||
if (i == CursorAddress) {
|
||
break;
|
||
}
|
||
}
|
||
/* we are pointing at a character IN an
|
||
* unprotected word (or we wrapped)
|
||
*/
|
||
while (!Disspace(GetHost(i))) {
|
||
i = ScreenInc(i);
|
||
if (i == CursorAddress) {
|
||
break;
|
||
}
|
||
}
|
||
CursorAddress = ScreenDec(i);
|
||
break;
|
||
|
||
/* Get to last non-blank of this/next unprotected
|
||
* field.
|
||
*/
|
||
case FCN_FIELDEND:
|
||
i = LastOfField(CursorAddress);
|
||
if (i != CursorAddress) {
|
||
CursorAddress = i; /* We moved; take this */
|
||
} else {
|
||
j = FieldInc(CursorAddress); /* Move to next field */
|
||
i = LastOfField(j);
|
||
if (i != j) {
|
||
CursorAddress = i; /* We moved; take this */
|
||
}
|
||
/* else - nowhere else on screen to be; stay here */
|
||
}
|
||
break;
|
||
#endif /* !defined(PURE3274) */
|
||
|
||
default:
|
||
/* We don't handle this yet */
|
||
RingBell("Function not implemented");
|
||
}
|
||
}
|
||
return 1; /* We did something! */
|
||
}
|
||
|
||
|
||
/*
|
||
* We get data from the terminal. We keep track of the shift state
|
||
* (including ALT, CONTROL), and then call AcceptKeystroke to actually
|
||
* process any non-shift keys.
|
||
*/
|
||
|
||
int
|
||
DataFrom3270(buffer, count)
|
||
unsigned char *buffer; /* where the data is */
|
||
int count; /* how much data there is */
|
||
{
|
||
int origCount;
|
||
|
||
origCount = count;
|
||
|
||
while (count) {
|
||
if (*buffer >= numberof(hits)) {
|
||
ExitString("Unknown scancode encountered in DataFrom3270.\n", 1);
|
||
/*NOTREACHED*/
|
||
}
|
||
|
||
switch (hits[*buffer].hit[HITNUM(rememberedshiftstate)].ctlrfcn) {
|
||
|
||
case FCN_MAKE_SHIFT:
|
||
rememberedshiftstate |= (SHIFT_RIGHT|SHIFT_UPSHIFT);
|
||
break;
|
||
case FCN_BREAK_SHIFT:
|
||
rememberedshiftstate &= ~(SHIFT_RIGHT|SHIFT_UPSHIFT);
|
||
break;
|
||
case FCN_MAKE_ALT:
|
||
rememberedshiftstate |= SHIFT_ALT;
|
||
break;
|
||
case FCN_BREAK_ALT:
|
||
rememberedshiftstate &= ~SHIFT_ALT;
|
||
break;
|
||
default:
|
||
if (AcceptKeystroke(*buffer, rememberedshiftstate) == 0) {
|
||
return(origCount-count);
|
||
}
|
||
break;
|
||
}
|
||
buffer++;
|
||
count--;
|
||
}
|
||
return(origCount-count);
|
||
}
|